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Neko [114]
2 years ago
9

1. At the synaptic knob, voltage-gated ______________ channels open, thereby stimulating the synaptic vesicles to release their

neurotransmitters by exocytosis.
Biology
2 answers:
kupik [55]2 years ago
5 0

Answer:

calcium

Explanation:its the best choice

mart [117]2 years ago
4 0
The best answer choice is ‘ Calcium ‘ . I hope this helped !
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Arrange the events taking place during transcription in order: i) The pre-RNA undergoes processing ii) RNA polymerase moves down
Anastasy [175]

Answer:

RNA polymerase binds to the promoter

Polymerase initiates RNA synthesis at the start point on the template strand

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Explanation:

The promoter is the specific DNA sequence that serves as a binding site for RNA polymerase. The enzyme RNA polymerase recognizes the promoter sequence and binds to it to begin the process of RNA synthesis. The process of RNA synthesis begins at the start site where the process of the unwinding of DNA duplex is initiated.

The unwinding separates the two DNA strands at the start site where RNA polymerase begins the process of synthesis of the new RNA strand. The newly formed RNA strand and RNA polymerase are released from the template strand after the termination of the process.

In eukaryotes, the primary RNA transcript undergoes the process of splicing of introns, the addition of poly-A tails and 5' cap which in turn transform it into the mature mRNA.

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EXPERT HELP: I'LL GIVE BRAINLIEST:<br><br> Choose TWO statements
sesenic [268]
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Summary of gene expression starting with DNA anding with proteins.
madreJ [45]

Answer:

Normally, transcription begins when an RNA polymerase binds to a so-called promoter sequence on the DNA molecule. ... Some regulatory proteins affect the transcription of multiple genes. This occurs because multiple copies of the regulatory protein binding sites exist within the genome of a cell.

Explanation:

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